
const {src,dest,parallel,series,watch} = require('gulp');
const loadPlugins = require('gulp-load-plugins');
const plugins = loadPlugins();
const del = require('del');
const browserSync = require('browser-sync');
const bs = browserSync.create();
const data = {
    menus: [
      {
        name: 'Home',
        icon: 'aperture',
        link: 'index.html'
      },
      {
        name: 'Features',
        link: 'features.html'
      },
      {
        name: 'About',
        link: 'about.html'
      },
      {
        name: 'Contact',
        link: '#',
        children: [
          {
            name: 'Twitter',
            link: 'https://twitter.com/w_zce'
          },
          {
            name: 'About',
            link: 'https://weibo.com/zceme'
          },
          {
            name: 'divider'
          },
          {
            name: 'About',
            link: 'https://github.com/zce'
          }
        ]
      }
    ],
    pkg: require('./package.json'),
    date: new Date()
  }
const style = () => {
    return src('src/assets/styles/*.scss',{base:'src'})
    .pipe(plugins.sass({outputStyle:"expanded"}))
    .pipe(dest('temp'))
}
const script = () => {
    return src('src/assets/scripts/*.js',{base:'src'})
    .pipe(plugins.babel({presets:['@babel/preset-env']}))
    .pipe(dest('temp'))
}
const page = () => {
    return src('src/*.html',{base:'src'})
    .pipe(plugins.swig({data,defaults:{cache:false}}))
    .pipe(dest('temp'))
}
const image = () => {
  return src('src/assets/images/**',{base:"src"})
  .pipe(plugins.imagemin())
  .pipe(dest('dist'))
}
const font = () => {
  return src('src/assets/fonts/**',{base:"src"})
  .pipe(plugins.imagemin())
  .pipe(dest('dist'))
}
const extra = () => {
  return src('public/**',{base:'public'})
  .pipe(dest('dist'))
}
const clean = ()=> {
  return del(['dist','temp'])
}
const server = () => {
  watch('src/assets/styles/*.scss',style);
  watch('src/assets/script/*.js',script);
  watch('src/*.html',page);
  watch([
    'src/assets/images/**',
    'src/assets/fonts/**',
    'public/**'
  ],bs.reload)
  bs.init({
      notify:false,
      cache:false,
      files:'temp/**',
      port:"2080",
    server: {
      baseDir:["temp","src",'public'],
      routes:{"/node_modules":"./node_modules"}
    }
  })
}
const useref = () => {
  return src('temp/*.html',{base:"temp"})
  .pipe(plugins.useref({searchPath:['dist','.']}))
  .pipe(plugins.if(/\.js$/,plugins.uglify()))
  .pipe(plugins.if(/\.css$/,plugins.cleanCss()))
  .pipe(plugins.if(/\.html$/,plugins.htmlmin({
    collapseWhitespace:true,
    minifyCSS:true,
    minifyJSS:true
  })))
  .pipe(dest('dist'))
}
const compile = parallel(style,script,page);
const start = series(compile,server);
const build = series(clean,series(compile,useref),image,font,extra)
module.exports = {
   start,
   build,
   clean
}